QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Campo, CA

No earthquake was likely felt in Campo in the 24 hours to 4:07 am PST (12:07 UTC). The last one was M 4.9, 122 km (76 mi) E, at 10:27 am PST on 3 November 2026, estimated intensity II (weak) in town; 321 felt reports to USGS. Every earthquake near Campo

This page: a magnitude 1.8 earthquake was recorded 14 km (9 mi) northeast of Campo, CA, at 12:33 pm PDT on 19 July 2018 (19:33 UTC), 17 km deep.

USGS: 14km NE of Campo, CA

75 km (46 mi) E of San Diego, CA · 58 km (36 mi) ESE of El Cajon, CA

12:33 pm PDT, Jul 19, 2018 · · 17 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N San Diego County 54 kmImperial County 101 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
12:33 pm PDT on 19 July 2018 ()
Where
14 km (9 mi) northeast of Campo, CA · earthquakes near Campo
Magnitude
M 1.8 (ml)
Depth
17 km below the surface
Felt
no reports yet
Nearest
San Diego County, 54 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3030 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Campo, 14 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Pine Valley.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 810,000× the energy of this one
  3. Around the size people start to feel M 3.0 72× the energy of this one
  4. This earthquake M 1.8 about 13 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 3 earthquakes of M5 or more within 50 km:

  1. 5.7 8km ESE of Ocotillo, CA · 41 km E of this epicentre
  2. 5.2 21km NW of Ocotillo, CA · 28 km NE of this epicentre
  3. 5.0 26km NE of Pine Valley, CA · 31 km N of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 32.6903, -116.3513. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Diego County, CA 54 km (34 mi) NW earthquakes near San Diego County
Imperial County, CA 101 km (63 mi) ENE earthquakes near Imperial County
Riverside County, CA 120 km (75 mi) NNE earthquakes near Riverside County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

42 earthquakes have been recorded within 50 km since this one.

  1. 1.7 17km ESE of Julian, CA
  2. 2.8 26km SSW of Ocotillo Wells, CA
  3. 1.6 11km NNE of Pine Valley, CA
  4. 1.8 20km SE of Ocotillo Wells, CA
  5. 3.9 20km SE of Ocotillo Wells, CA
  6. 1.8 23km ENE of Pine Valley, CA
  7. 1.8 26km SSW of Ocotillo Wells, CA
  8. 1.7 23km ENE of Pine Valley, CA
  9. 1.8 21km ENE of Pine Valley, CA
  10. 1.7 26km ENE of Pine Valley, CA
  11. 1.5 9km WNW of Ocotillo, CA
  12. 2.6 12km ESE of Pine Valley, CA
  13. 1.6 4km ENE of Julian, CA
  14. 1.9 12km E of Julian, CA
  15. 1.5 26km SSW of Ocotillo Wells, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.